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Message-ID: <tip-051825cab15c8180f2f0dbc3a9de5a3db7476065@git.kernel.org>
Date: Wed, 5 Nov 2014 09:16:07 -0800
From: tip-bot for Jiang Liu <tipbot@...or.com>
To: linux-tip-commits@...r.kernel.org
Cc: konrad.wilk@...cle.com, bp@...en8.de, benh@...nel.crashing.org,
bhelgaas@...gle.com, tony.luck@...el.com,
linux-kernel@...r.kernel.org, grant.likely@...aro.org,
rjw@...ysocki.net, gregkh@...uxfoundation.org, tglx@...utronix.de,
mingo@...nel.org, joro@...tes.org, jiang.liu@...ux.intel.com,
rdunlap@...radead.org, hpa@...or.com, prarit@...hat.com,
yinghai@...nel.org
Subject: [tip:x86/apic] x86, irq:
Move HT IRQ related code from io_apic.c into htirq.c
Commit-ID: 051825cab15c8180f2f0dbc3a9de5a3db7476065
Gitweb: http://git.kernel.org/tip/051825cab15c8180f2f0dbc3a9de5a3db7476065
Author: Jiang Liu <jiang.liu@...ux.intel.com>
AuthorDate: Mon, 27 Oct 2014 16:12:03 +0800
Committer: Thomas Gleixner <tglx@...utronix.de>
CommitDate: Wed, 5 Nov 2014 18:10:47 +0100
x86, irq: Move HT IRQ related code from io_apic.c into htirq.c
Create arch/x86/kernel/apic/htirq.c to host Hypertransport IRQ related
code, preparing for enabling hierarchy irqdomain.
Signed-off-by: Jiang Liu <jiang.liu@...ux.intel.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Cc: Tony Luck <tony.luck@...el.com>
Cc: Joerg Roedel <joro@...tes.org>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc: Rafael J. Wysocki <rjw@...ysocki.net>
Cc: Bjorn Helgaas <bhelgaas@...gle.com>
Cc: Randy Dunlap <rdunlap@...radead.org>
Cc: Yinghai Lu <yinghai@...nel.org>
Cc: Borislav Petkov <bp@...en8.de>
Cc: Grant Likely <grant.likely@...aro.org>
Cc: Prarit Bhargava <prarit@...hat.com>
Link: http://lkml.kernel.org/r/1414397531-28254-13-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
---
arch/x86/kernel/apic/Makefile | 1 +
arch/x86/kernel/apic/htirq.c | 107 +++++++++++++++++++++++++++++++++++++++++
arch/x86/kernel/apic/io_apic.c | 92 -----------------------------------
3 files changed, 108 insertions(+), 92 deletions(-)
diff --git a/arch/x86/kernel/apic/Makefile b/arch/x86/kernel/apic/Makefile
index aac3007..8bb12dd 100644
--- a/arch/x86/kernel/apic/Makefile
+++ b/arch/x86/kernel/apic/Makefile
@@ -7,6 +7,7 @@ obj-y += hw_nmi.o
obj-$(CONFIG_X86_IO_APIC) += io_apic.o
obj-$(CONFIG_PCI_MSI) += msi.o
+obj-$(CONFIG_HT_IRQ) += htirq.o
obj-$(CONFIG_SMP) += ipi.o
ifeq ($(CONFIG_X86_64),y)
diff --git a/arch/x86/kernel/apic/htirq.c b/arch/x86/kernel/apic/htirq.c
new file mode 100644
index 0000000..a4980c5
--- /dev/null
+++ b/arch/x86/kernel/apic/htirq.c
@@ -0,0 +1,107 @@
+/*
+ * Support Hypertransport IRQ
+ *
+ * Copyright (C) 1997, 1998, 1999, 2000, 2009 Ingo Molnar, Hajnalka Szabo
+ * Moved from arch/x86/kernel/apic/io_apic.c.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/mm.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/pci.h>
+#include <linux/htirq.h>
+#include <asm/hw_irq.h>
+#include <asm/apic.h>
+#include <asm/hypertransport.h>
+
+/*
+ * Hypertransport interrupt support
+ */
+static void target_ht_irq(unsigned int irq, unsigned int dest, u8 vector)
+{
+ struct ht_irq_msg msg;
+
+ fetch_ht_irq_msg(irq, &msg);
+
+ msg.address_lo &= ~(HT_IRQ_LOW_VECTOR_MASK | HT_IRQ_LOW_DEST_ID_MASK);
+ msg.address_hi &= ~(HT_IRQ_HIGH_DEST_ID_MASK);
+
+ msg.address_lo |= HT_IRQ_LOW_VECTOR(vector) | HT_IRQ_LOW_DEST_ID(dest);
+ msg.address_hi |= HT_IRQ_HIGH_DEST_ID(dest);
+
+ write_ht_irq_msg(irq, &msg);
+}
+
+static int
+ht_set_affinity(struct irq_data *data, const struct cpumask *mask, bool force)
+{
+ struct irq_cfg *cfg = data->chip_data;
+ unsigned int dest;
+ int ret;
+
+ ret = apic_set_affinity(data, mask, &dest);
+ if (ret)
+ return ret;
+
+ target_ht_irq(data->irq, dest, cfg->vector);
+ return IRQ_SET_MASK_OK_NOCOPY;
+}
+
+static struct irq_chip ht_irq_chip = {
+ .name = "PCI-HT",
+ .irq_mask = mask_ht_irq,
+ .irq_unmask = unmask_ht_irq,
+ .irq_ack = apic_ack_edge,
+ .irq_set_affinity = ht_set_affinity,
+ .irq_retrigger = apic_retrigger_irq,
+ .flags = IRQCHIP_SKIP_SET_WAKE,
+};
+
+int arch_setup_ht_irq(unsigned int irq, struct pci_dev *dev)
+{
+ struct irq_cfg *cfg;
+ struct ht_irq_msg msg;
+ unsigned dest;
+ int err;
+
+ if (disable_apic)
+ return -ENXIO;
+
+ cfg = irq_cfg(irq);
+ err = assign_irq_vector(irq, cfg, apic->target_cpus());
+ if (err)
+ return err;
+
+ err = apic->cpu_mask_to_apicid_and(cfg->domain,
+ apic->target_cpus(), &dest);
+ if (err)
+ return err;
+
+ msg.address_hi = HT_IRQ_HIGH_DEST_ID(dest);
+
+ msg.address_lo =
+ HT_IRQ_LOW_BASE |
+ HT_IRQ_LOW_DEST_ID(dest) |
+ HT_IRQ_LOW_VECTOR(cfg->vector) |
+ ((apic->irq_dest_mode == 0) ?
+ HT_IRQ_LOW_DM_PHYSICAL :
+ HT_IRQ_LOW_DM_LOGICAL) |
+ HT_IRQ_LOW_RQEOI_EDGE |
+ ((apic->irq_delivery_mode != dest_LowestPrio) ?
+ HT_IRQ_LOW_MT_FIXED :
+ HT_IRQ_LOW_MT_ARBITRATED) |
+ HT_IRQ_LOW_IRQ_MASKED;
+
+ write_ht_irq_msg(irq, &msg);
+
+ irq_set_chip_and_handler_name(irq, &ht_irq_chip,
+ handle_edge_irq, "edge");
+
+ dev_dbg(&dev->dev, "irq %d for HT\n", irq);
+
+ return 0;
+}
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 653fe21..b1acb68 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -32,7 +32,6 @@
#include <linux/module.h>
#include <linux/syscore_ops.h>
#include <linux/irqdomain.h>
-#include <linux/htirq.h>
#include <linux/freezer.h>
#include <linux/kthread.h>
#include <linux/jiffies.h> /* time_after() */
@@ -49,7 +48,6 @@
#include <asm/dma.h>
#include <asm/timer.h>
#include <asm/i8259.h>
-#include <asm/hypertransport.h>
#include <asm/setup.h>
#include <asm/irq_remapping.h>
#include <asm/hw_irq.h>
@@ -2450,96 +2448,6 @@ static int __init ioapic_init_ops(void)
device_initcall(ioapic_init_ops);
-/*
- * Hypertransport interrupt support
- */
-#ifdef CONFIG_HT_IRQ
-
-static void target_ht_irq(unsigned int irq, unsigned int dest, u8 vector)
-{
- struct ht_irq_msg msg;
- fetch_ht_irq_msg(irq, &msg);
-
- msg.address_lo &= ~(HT_IRQ_LOW_VECTOR_MASK | HT_IRQ_LOW_DEST_ID_MASK);
- msg.address_hi &= ~(HT_IRQ_HIGH_DEST_ID_MASK);
-
- msg.address_lo |= HT_IRQ_LOW_VECTOR(vector) | HT_IRQ_LOW_DEST_ID(dest);
- msg.address_hi |= HT_IRQ_HIGH_DEST_ID(dest);
-
- write_ht_irq_msg(irq, &msg);
-}
-
-static int
-ht_set_affinity(struct irq_data *data, const struct cpumask *mask, bool force)
-{
- struct irq_cfg *cfg = data->chip_data;
- unsigned int dest;
- int ret;
-
- ret = apic_set_affinity(data, mask, &dest);
- if (ret)
- return ret;
-
- target_ht_irq(data->irq, dest, cfg->vector);
- return IRQ_SET_MASK_OK_NOCOPY;
-}
-
-static struct irq_chip ht_irq_chip = {
- .name = "PCI-HT",
- .irq_mask = mask_ht_irq,
- .irq_unmask = unmask_ht_irq,
- .irq_ack = apic_ack_edge,
- .irq_set_affinity = ht_set_affinity,
- .irq_retrigger = apic_retrigger_irq,
- .flags = IRQCHIP_SKIP_SET_WAKE,
-};
-
-int arch_setup_ht_irq(unsigned int irq, struct pci_dev *dev)
-{
- struct irq_cfg *cfg;
- struct ht_irq_msg msg;
- unsigned dest;
- int err;
-
- if (disable_apic)
- return -ENXIO;
-
- cfg = irq_cfg(irq);
- err = assign_irq_vector(irq, cfg, apic->target_cpus());
- if (err)
- return err;
-
- err = apic->cpu_mask_to_apicid_and(cfg->domain,
- apic->target_cpus(), &dest);
- if (err)
- return err;
-
- msg.address_hi = HT_IRQ_HIGH_DEST_ID(dest);
-
- msg.address_lo =
- HT_IRQ_LOW_BASE |
- HT_IRQ_LOW_DEST_ID(dest) |
- HT_IRQ_LOW_VECTOR(cfg->vector) |
- ((apic->irq_dest_mode == 0) ?
- HT_IRQ_LOW_DM_PHYSICAL :
- HT_IRQ_LOW_DM_LOGICAL) |
- HT_IRQ_LOW_RQEOI_EDGE |
- ((apic->irq_delivery_mode != dest_LowestPrio) ?
- HT_IRQ_LOW_MT_FIXED :
- HT_IRQ_LOW_MT_ARBITRATED) |
- HT_IRQ_LOW_IRQ_MASKED;
-
- write_ht_irq_msg(irq, &msg);
-
- irq_set_chip_and_handler_name(irq, &ht_irq_chip,
- handle_edge_irq, "edge");
-
- dev_printk(KERN_DEBUG, &dev->dev, "irq %d for HT\n", irq);
-
- return 0;
-}
-#endif /* CONFIG_HT_IRQ */
-
static int
io_apic_setup_irq_pin(unsigned int irq, int node, struct io_apic_irq_attr *attr)
{
--
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